1 /*
2 +----------------------------------------------------------------------+
3 | Zend Engine |
4 +----------------------------------------------------------------------+
5 | Copyright (c) Zend Technologies Ltd. (http://www.zend.com) |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 2.00 of the Zend license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.zend.com/license/2_00.txt. |
11 | If you did not receive a copy of the Zend license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@zend.com so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Andi Gutmans <andi@php.net> |
16 | Zeev Suraski <zeev@php.net> |
17 +----------------------------------------------------------------------+
18 */
19
20 #include "zend.h"
21 #include "zend_extensions.h"
22 #include "zend_modules.h"
23 #include "zend_constants.h"
24 #include "zend_list.h"
25 #include "zend_API.h"
26 #include "zend_exceptions.h"
27 #include "zend_builtin_functions.h"
28 #include "zend_ini.h"
29 #include "zend_vm.h"
30 #include "zend_dtrace.h"
31 #include "zend_virtual_cwd.h"
32 #include "zend_smart_str.h"
33 #include "zend_smart_string.h"
34 #include "zend_cpuinfo.h"
35 #include "zend_attributes.h"
36 #include "zend_observer.h"
37 #include "zend_fibers.h"
38 #include "zend_call_stack.h"
39 #include "zend_max_execution_timer.h"
40 #include "zend_hrtime.h"
41 #include "Optimizer/zend_optimizer.h"
42 #include "php.h"
43 #include "php_globals.h"
44
45 // FIXME: Breaks the declaration of the function below
46 #undef zenderror
47
48 static size_t global_map_ptr_last = 0;
49 static bool startup_done = false;
50
51 #ifdef ZTS
52 ZEND_API int compiler_globals_id;
53 ZEND_API int executor_globals_id;
54 ZEND_API size_t compiler_globals_offset;
55 ZEND_API size_t executor_globals_offset;
56 static HashTable *global_function_table = NULL;
57 static HashTable *global_class_table = NULL;
58 static HashTable *global_constants_table = NULL;
59 static HashTable *global_auto_globals_table = NULL;
60 static HashTable *global_persistent_list = NULL;
61 TSRMLS_MAIN_CACHE_DEFINE()
62 # define GLOBAL_FUNCTION_TABLE global_function_table
63 # define GLOBAL_CLASS_TABLE global_class_table
64 # define GLOBAL_CONSTANTS_TABLE global_constants_table
65 # define GLOBAL_AUTO_GLOBALS_TABLE global_auto_globals_table
66 #else
67 # define GLOBAL_FUNCTION_TABLE CG(function_table)
68 # define GLOBAL_CLASS_TABLE CG(class_table)
69 # define GLOBAL_AUTO_GLOBALS_TABLE CG(auto_globals)
70 # define GLOBAL_CONSTANTS_TABLE EG(zend_constants)
71 #endif
72
73 ZEND_API zend_utility_values zend_uv;
74 ZEND_API bool zend_dtrace_enabled;
75
76 /* version information */
77 static char *zend_version_info;
78 static uint32_t zend_version_info_length;
79 #define ZEND_CORE_VERSION_INFO "Zend Engine v" ZEND_VERSION ", Copyright (c) Zend Technologies\n"
80 #define PRINT_ZVAL_INDENT 4
81
82 /* true multithread-shared globals */
83 ZEND_API zend_class_entry *zend_standard_class_def = NULL;
84 ZEND_API size_t (*zend_printf)(const char *format, ...);
85 ZEND_API zend_write_func_t zend_write;
86 ZEND_API FILE *(*zend_fopen)(zend_string *filename, zend_string **opened_path);
87 ZEND_API zend_result (*zend_stream_open_function)(zend_file_handle *handle);
88 ZEND_API void (*zend_ticks_function)(int ticks);
89 ZEND_API void (*zend_interrupt_function)(zend_execute_data *execute_data);
90 ZEND_API void (*zend_error_cb)(int type, zend_string *error_filename, const uint32_t error_lineno, zend_string *message);
91 void (*zend_printf_to_smart_string)(smart_string *buf, const char *format, va_list ap);
92 void (*zend_printf_to_smart_str)(smart_str *buf, const char *format, va_list ap);
93 ZEND_API char *(*zend_getenv)(const char *name, size_t name_len);
94 ZEND_API zend_string *(*zend_resolve_path)(zend_string *filename);
95 ZEND_API zend_result (*zend_post_startup_cb)(void) = NULL;
96 ZEND_API void (*zend_post_shutdown_cb)(void) = NULL;
97
98 /* This callback must be signal handler safe! */
99 void (*zend_on_timeout)(int seconds);
100
101 static void (*zend_message_dispatcher_p)(zend_long message, const void *data);
102 static zval *(*zend_get_configuration_directive_p)(zend_string *name);
103
104 #if ZEND_RC_DEBUG
105 ZEND_API bool zend_rc_debug = 0;
106 #endif
107
ZEND_INI_MH(OnUpdateErrorReporting)108 static ZEND_INI_MH(OnUpdateErrorReporting) /* {{{ */
109 {
110 if (!new_value) {
111 EG(error_reporting) = E_ALL;
112 } else {
113 EG(error_reporting) = atoi(ZSTR_VAL(new_value));
114 }
115 return SUCCESS;
116 }
117 /* }}} */
118
ZEND_INI_MH(OnUpdateGCEnabled)119 static ZEND_INI_MH(OnUpdateGCEnabled) /* {{{ */
120 {
121 bool val;
122
123 val = zend_ini_parse_bool(new_value);
124 gc_enable(val);
125
126 return SUCCESS;
127 }
128 /* }}} */
129
ZEND_INI_DISP(zend_gc_enabled_displayer_cb)130 static ZEND_INI_DISP(zend_gc_enabled_displayer_cb) /* {{{ */
131 {
132 if (gc_enabled()) {
133 ZEND_PUTS("On");
134 } else {
135 ZEND_PUTS("Off");
136 }
137 }
138 /* }}} */
139
140
ZEND_INI_MH(OnUpdateScriptEncoding)141 static ZEND_INI_MH(OnUpdateScriptEncoding) /* {{{ */
142 {
143 if (!CG(multibyte)) {
144 return FAILURE;
145 }
146 if (!zend_multibyte_get_functions()) {
147 return SUCCESS;
148 }
149 return zend_multibyte_set_script_encoding_by_string(new_value ? ZSTR_VAL(new_value) : NULL, new_value ? ZSTR_LEN(new_value) : 0);
150 }
151 /* }}} */
152
ZEND_INI_MH(OnUpdateAssertions)153 static ZEND_INI_MH(OnUpdateAssertions) /* {{{ */
154 {
155 zend_long *p = (zend_long *) ZEND_INI_GET_ADDR();
156
157 zend_long val = zend_ini_parse_quantity_warn(new_value, entry->name);
158
159 if (stage != ZEND_INI_STAGE_STARTUP &&
160 stage != ZEND_INI_STAGE_SHUTDOWN &&
161 *p != val &&
162 (*p < 0 || val < 0)) {
163 zend_error(E_WARNING, "zend.assertions may be completely enabled or disabled only in php.ini");
164 return FAILURE;
165 }
166
167 *p = val;
168 return SUCCESS;
169 }
170 /* }}} */
171
ZEND_INI_MH(OnSetExceptionStringParamMaxLen)172 static ZEND_INI_MH(OnSetExceptionStringParamMaxLen) /* {{{ */
173 {
174 zend_long i = ZEND_ATOL(ZSTR_VAL(new_value));
175 if (i >= 0 && i <= 1000000) {
176 EG(exception_string_param_max_len) = i;
177 return SUCCESS;
178 } else {
179 return FAILURE;
180 }
181 }
182 /* }}} */
183
184 #ifdef ZEND_CHECK_STACK_LIMIT
ZEND_INI_MH(OnUpdateMaxAllowedStackSize)185 static ZEND_INI_MH(OnUpdateMaxAllowedStackSize) /* {{{ */
186 {
187 zend_long size = zend_ini_parse_quantity_warn(new_value, entry->name);
188
189 if (size < ZEND_MAX_ALLOWED_STACK_SIZE_UNCHECKED) {
190 zend_error(E_WARNING, "Invalid \"%s\" setting. Value must be >= %d, but got " ZEND_LONG_FMT,
191 ZSTR_VAL(entry->name), ZEND_MAX_ALLOWED_STACK_SIZE_UNCHECKED, size);
192 return FAILURE;
193 }
194
195 EG(max_allowed_stack_size) = size;
196
197 return SUCCESS;
198 }
199 /* }}} */
200
ZEND_INI_MH(OnUpdateReservedStackSize)201 static ZEND_INI_MH(OnUpdateReservedStackSize) /* {{{ */
202 {
203 zend_ulong size = zend_ini_parse_uquantity_warn(new_value, entry->name);
204
205 /* Min value accounts for alloca, PCRE2 START_FRAMES_SIZE, and some buffer
206 * for normal function calls.
207 * We could reduce this on systems without alloca if we also add stack size
208 * checks before pcre2_match(). */
209 #ifdef ZEND_ALLOCA_MAX_SIZE
210 zend_ulong min = ZEND_ALLOCA_MAX_SIZE + 16*1024;
211 #else
212 zend_ulong min = 32*1024;
213 #endif
214
215 if (size == 0) {
216 size = min;
217 } else if (size < min) {
218 zend_error(E_WARNING, "Invalid \"%s\" setting. Value must be >= " ZEND_ULONG_FMT ", but got " ZEND_ULONG_FMT "\n",
219 ZSTR_VAL(entry->name), min, size);
220 return FAILURE;
221 }
222
223 EG(reserved_stack_size) = size;
224
225 return SUCCESS;
226 }
227 /* }}} */
228 #endif /* ZEND_CHECK_STACK_LIMIT */
229
ZEND_INI_MH(OnUpdateFiberStackSize)230 static ZEND_INI_MH(OnUpdateFiberStackSize) /* {{{ */
231 {
232 if (new_value) {
233 zend_long tmp = zend_ini_parse_quantity_warn(new_value, entry->name);
234 if (tmp < 0) {
235 zend_error(E_WARNING, "fiber.stack_size must be a positive number");
236 return FAILURE;
237 }
238 EG(fiber_stack_size) = tmp;
239 } else {
240 EG(fiber_stack_size) = ZEND_FIBER_DEFAULT_C_STACK_SIZE;
241 }
242 return SUCCESS;
243 }
244 /* }}} */
245
246 #if ZEND_DEBUG
247 # define SIGNAL_CHECK_DEFAULT "1"
248 #else
249 # define SIGNAL_CHECK_DEFAULT "0"
250 #endif
251
252 ZEND_INI_BEGIN()
253 ZEND_INI_ENTRY("error_reporting", NULL, ZEND_INI_ALL, OnUpdateErrorReporting)
254 STD_ZEND_INI_ENTRY("zend.assertions", "1", ZEND_INI_ALL, OnUpdateAssertions, assertions, zend_executor_globals, executor_globals)
255 ZEND_INI_ENTRY3_EX("zend.enable_gc", "1", ZEND_INI_ALL, OnUpdateGCEnabled, NULL, NULL, NULL, zend_gc_enabled_displayer_cb)
256 STD_ZEND_INI_BOOLEAN("zend.multibyte", "0", ZEND_INI_PERDIR, OnUpdateBool, multibyte, zend_compiler_globals, compiler_globals)
257 ZEND_INI_ENTRY("zend.script_encoding", NULL, ZEND_INI_ALL, OnUpdateScriptEncoding)
258 STD_ZEND_INI_BOOLEAN("zend.detect_unicode", "1", ZEND_INI_ALL, OnUpdateBool, detect_unicode, zend_compiler_globals, compiler_globals)
259 #ifdef ZEND_SIGNALS
260 STD_ZEND_INI_BOOLEAN("zend.signal_check", SIGNAL_CHECK_DEFAULT, ZEND_INI_SYSTEM, OnUpdateBool, check, zend_signal_globals_t, zend_signal_globals)
261 #endif
262 STD_ZEND_INI_BOOLEAN("zend.exception_ignore_args", "0", ZEND_INI_ALL, OnUpdateBool, exception_ignore_args, zend_executor_globals, executor_globals)
263 STD_ZEND_INI_ENTRY("zend.exception_string_param_max_len", "15", ZEND_INI_ALL, OnSetExceptionStringParamMaxLen, exception_string_param_max_len, zend_executor_globals, executor_globals)
264 STD_ZEND_INI_ENTRY("fiber.stack_size", NULL, ZEND_INI_ALL, OnUpdateFiberStackSize, fiber_stack_size, zend_executor_globals, executor_globals)
265 #ifdef ZEND_CHECK_STACK_LIMIT
266 /* The maximum allowed call stack size. 0: auto detect, -1: no limit. For fibers, this is fiber.stack_size. */
267 STD_ZEND_INI_ENTRY("zend.max_allowed_stack_size", "0", ZEND_INI_SYSTEM, OnUpdateMaxAllowedStackSize, max_allowed_stack_size, zend_executor_globals, executor_globals)
268 /* Substracted from the max allowed stack size, as a buffer, when checking for overflow. 0: auto detect. */
269 STD_ZEND_INI_ENTRY("zend.reserved_stack_size", "0", ZEND_INI_SYSTEM, OnUpdateReservedStackSize, reserved_stack_size, zend_executor_globals, executor_globals)
270 #endif
271
ZEND_INI_END()272 ZEND_INI_END()
273
274 ZEND_API size_t zend_vspprintf(char **pbuf, size_t max_len, const char *format, va_list ap) /* {{{ */
275 {
276 smart_string buf = {0};
277
278 /* since there are places where (v)spprintf called without checking for null,
279 a bit of defensive coding here */
280 if (!pbuf) {
281 return 0;
282 }
283
284 zend_printf_to_smart_string(&buf, format, ap);
285
286 if (max_len && buf.len > max_len) {
287 buf.len = max_len;
288 }
289
290 smart_string_0(&buf);
291
292 if (buf.c) {
293 *pbuf = buf.c;
294 return buf.len;
295 } else {
296 *pbuf = estrndup("", 0);
297 return 0;
298 }
299 }
300 /* }}} */
301
zend_spprintf(char ** message,size_t max_len,const char * format,...)302 ZEND_API size_t zend_spprintf(char **message, size_t max_len, const char *format, ...) /* {{{ */
303 {
304 va_list arg;
305 size_t len;
306
307 va_start(arg, format);
308 len = zend_vspprintf(message, max_len, format, arg);
309 va_end(arg);
310 return len;
311 }
312 /* }}} */
313
zend_spprintf_unchecked(char ** message,size_t max_len,const char * format,...)314 ZEND_API size_t zend_spprintf_unchecked(char **message, size_t max_len, const char *format, ...) /* {{{ */
315 {
316 va_list arg;
317 size_t len;
318
319 va_start(arg, format);
320 len = zend_vspprintf(message, max_len, format, arg);
321 va_end(arg);
322 return len;
323 }
324 /* }}} */
325
zend_vstrpprintf(size_t max_len,const char * format,va_list ap)326 ZEND_API zend_string *zend_vstrpprintf(size_t max_len, const char *format, va_list ap) /* {{{ */
327 {
328 smart_str buf = {0};
329
330 zend_printf_to_smart_str(&buf, format, ap);
331
332 if (!buf.s) {
333 return ZSTR_EMPTY_ALLOC();
334 }
335
336 if (max_len && ZSTR_LEN(buf.s) > max_len) {
337 ZSTR_LEN(buf.s) = max_len;
338 }
339
340 return smart_str_extract(&buf);
341 }
342 /* }}} */
343
zend_strpprintf(size_t max_len,const char * format,...)344 ZEND_API zend_string *zend_strpprintf(size_t max_len, const char *format, ...) /* {{{ */
345 {
346 va_list arg;
347 zend_string *str;
348
349 va_start(arg, format);
350 str = zend_vstrpprintf(max_len, format, arg);
351 va_end(arg);
352 return str;
353 }
354 /* }}} */
355
zend_strpprintf_unchecked(size_t max_len,const char * format,...)356 ZEND_API zend_string *zend_strpprintf_unchecked(size_t max_len, const char *format, ...) /* {{{ */
357 {
358 va_list arg;
359 zend_string *str;
360
361 va_start(arg, format);
362 str = zend_vstrpprintf(max_len, format, arg);
363 va_end(arg);
364 return str;
365 }
366 /* }}} */
367
368 static void zend_print_zval_r_to_buf(smart_str *buf, zval *expr, int indent);
369
print_hash(smart_str * buf,HashTable * ht,int indent,bool is_object)370 static void print_hash(smart_str *buf, HashTable *ht, int indent, bool is_object) /* {{{ */
371 {
372 zval *tmp;
373 zend_string *string_key;
374 zend_ulong num_key;
375 int i;
376
377 for (i = 0; i < indent; i++) {
378 smart_str_appendc(buf, ' ');
379 }
380 smart_str_appends(buf, "(\n");
381 indent += PRINT_ZVAL_INDENT;
382 ZEND_HASH_FOREACH_KEY_VAL_IND(ht, num_key, string_key, tmp) {
383 for (i = 0; i < indent; i++) {
384 smart_str_appendc(buf, ' ');
385 }
386 smart_str_appendc(buf, '[');
387 if (string_key) {
388 if (is_object) {
389 const char *prop_name, *class_name;
390 size_t prop_len;
391 int mangled = zend_unmangle_property_name_ex(string_key, &class_name, &prop_name, &prop_len);
392
393 smart_str_appendl(buf, prop_name, prop_len);
394 if (class_name && mangled == SUCCESS) {
395 if (class_name[0] == '*') {
396 smart_str_appends(buf, ":protected");
397 } else {
398 smart_str_appends(buf, ":");
399 smart_str_appends(buf, class_name);
400 smart_str_appends(buf, ":private");
401 }
402 }
403 } else {
404 smart_str_append(buf, string_key);
405 }
406 } else {
407 smart_str_append_long(buf, num_key);
408 }
409 smart_str_appends(buf, "] => ");
410 zend_print_zval_r_to_buf(buf, tmp, indent+PRINT_ZVAL_INDENT);
411 smart_str_appends(buf, "\n");
412 } ZEND_HASH_FOREACH_END();
413 indent -= PRINT_ZVAL_INDENT;
414 for (i = 0; i < indent; i++) {
415 smart_str_appendc(buf, ' ');
416 }
417 smart_str_appends(buf, ")\n");
418 }
419 /* }}} */
420
print_flat_hash(smart_str * buf,HashTable * ht)421 static void print_flat_hash(smart_str *buf, HashTable *ht) /* {{{ */
422 {
423 zval *tmp;
424 zend_string *string_key;
425 zend_ulong num_key;
426 int i = 0;
427
428 ZEND_HASH_FOREACH_KEY_VAL_IND(ht, num_key, string_key, tmp) {
429 if (i++ > 0) {
430 smart_str_appendc(buf, ',');
431 }
432 smart_str_appendc(buf, '[');
433 if (string_key) {
434 smart_str_append(buf, string_key);
435 } else {
436 smart_str_append_unsigned(buf, num_key);
437 }
438 smart_str_appends(buf, "] => ");
439 zend_print_flat_zval_r_to_buf(buf, tmp);
440 } ZEND_HASH_FOREACH_END();
441 }
442 /* }}} */
443
zend_make_printable_zval(zval * expr,zval * expr_copy)444 ZEND_API bool zend_make_printable_zval(zval *expr, zval *expr_copy) /* {{{ */
445 {
446 if (Z_TYPE_P(expr) == IS_STRING) {
447 return 0;
448 } else {
449 ZVAL_STR(expr_copy, zval_get_string_func(expr));
450 return 1;
451 }
452 }
453 /* }}} */
454
zend_print_zval(zval * expr,int indent)455 ZEND_API size_t zend_print_zval(zval *expr, int indent) /* {{{ */
456 {
457 zend_string *tmp_str;
458 zend_string *str = zval_get_tmp_string(expr, &tmp_str);
459 size_t len = ZSTR_LEN(str);
460
461 if (len != 0) {
462 zend_write(ZSTR_VAL(str), len);
463 }
464
465 zend_tmp_string_release(tmp_str);
466 return len;
467 }
468 /* }}} */
469
zend_print_flat_zval_r_to_buf(smart_str * buf,zval * expr)470 void zend_print_flat_zval_r_to_buf(smart_str *buf, zval *expr) /* {{{ */
471 {
472 switch (Z_TYPE_P(expr)) {
473 case IS_ARRAY:
474 smart_str_appends(buf, "Array (");
475 if (!(GC_FLAGS(Z_ARRVAL_P(expr)) & GC_IMMUTABLE)) {
476 if (GC_IS_RECURSIVE(Z_ARRVAL_P(expr))) {
477 smart_str_appends(buf, " *RECURSION*");
478 return;
479 }
480 GC_PROTECT_RECURSION(Z_ARRVAL_P(expr));
481 }
482 print_flat_hash(buf, Z_ARRVAL_P(expr));
483 smart_str_appendc(buf, ')');
484 GC_TRY_UNPROTECT_RECURSION(Z_ARRVAL_P(expr));
485 break;
486 case IS_OBJECT:
487 {
488 HashTable *properties;
489 zend_string *class_name = Z_OBJ_HANDLER_P(expr, get_class_name)(Z_OBJ_P(expr));
490 smart_str_append(buf, class_name);
491 smart_str_appends(buf, " Object (");
492 zend_string_release_ex(class_name, 0);
493
494 if (GC_IS_RECURSIVE(Z_COUNTED_P(expr))) {
495 smart_str_appends(buf, " *RECURSION*");
496 return;
497 }
498
499 properties = Z_OBJPROP_P(expr);
500 if (properties) {
501 GC_PROTECT_RECURSION(Z_OBJ_P(expr));
502 print_flat_hash(buf, properties);
503 GC_UNPROTECT_RECURSION(Z_OBJ_P(expr));
504 }
505 smart_str_appendc(buf, ')');
506 break;
507 }
508 case IS_REFERENCE:
509 zend_print_flat_zval_r_to_buf(buf, Z_REFVAL_P(expr));
510 break;
511 case IS_STRING:
512 smart_str_append(buf, Z_STR_P(expr));
513 break;
514 default:
515 {
516 zend_string *str = zval_get_string_func(expr);
517 smart_str_append(buf, str);
518 zend_string_release_ex(str, 0);
519 break;
520 }
521 }
522 }
523 /* }}} */
524
zend_print_flat_zval_r(zval * expr)525 ZEND_API void zend_print_flat_zval_r(zval *expr)
526 {
527 smart_str buf = {0};
528 zend_print_flat_zval_r_to_buf(&buf, expr);
529 smart_str_0(&buf);
530 zend_write(ZSTR_VAL(buf.s), ZSTR_LEN(buf.s));
531 smart_str_free(&buf);
532 }
533
zend_print_zval_r_to_buf(smart_str * buf,zval * expr,int indent)534 static void zend_print_zval_r_to_buf(smart_str *buf, zval *expr, int indent) /* {{{ */
535 {
536 switch (Z_TYPE_P(expr)) {
537 case IS_ARRAY:
538 smart_str_appends(buf, "Array\n");
539 if (!(GC_FLAGS(Z_ARRVAL_P(expr)) & GC_IMMUTABLE)) {
540 if (GC_IS_RECURSIVE(Z_ARRVAL_P(expr))) {
541 smart_str_appends(buf, " *RECURSION*");
542 return;
543 }
544 GC_PROTECT_RECURSION(Z_ARRVAL_P(expr));
545 }
546 print_hash(buf, Z_ARRVAL_P(expr), indent, 0);
547 GC_TRY_UNPROTECT_RECURSION(Z_ARRVAL_P(expr));
548 break;
549 case IS_OBJECT:
550 {
551 HashTable *properties;
552
553 zend_object *zobj = Z_OBJ_P(expr);
554 uint32_t *guard = zend_get_recursion_guard(zobj);
555 zend_string *class_name = Z_OBJ_HANDLER_P(expr, get_class_name)(zobj);
556 smart_str_appends(buf, ZSTR_VAL(class_name));
557 zend_string_release_ex(class_name, 0);
558
559 if (!(zobj->ce->ce_flags & ZEND_ACC_ENUM)) {
560 smart_str_appends(buf, " Object\n");
561 } else {
562 smart_str_appends(buf, " Enum");
563 if (zobj->ce->enum_backing_type != IS_UNDEF) {
564 smart_str_appendc(buf, ':');
565 smart_str_appends(buf, zend_get_type_by_const(zobj->ce->enum_backing_type));
566 }
567 smart_str_appendc(buf, '\n');
568 }
569
570 if (ZEND_GUARD_OR_GC_IS_RECURSIVE(guard, DEBUG, zobj)) {
571 smart_str_appends(buf, " *RECURSION*");
572 return;
573 }
574
575 if ((properties = zend_get_properties_for(expr, ZEND_PROP_PURPOSE_DEBUG)) == NULL) {
576 print_hash(buf, (HashTable*) &zend_empty_array, indent, 1);
577 break;
578 }
579
580 ZEND_GUARD_OR_GC_PROTECT_RECURSION(guard, DEBUG, zobj);
581 print_hash(buf, properties, indent, 1);
582 ZEND_GUARD_OR_GC_UNPROTECT_RECURSION(guard, DEBUG, zobj);
583
584 zend_release_properties(properties);
585 break;
586 }
587 case IS_LONG:
588 smart_str_append_long(buf, Z_LVAL_P(expr));
589 break;
590 case IS_REFERENCE:
591 zend_print_zval_r_to_buf(buf, Z_REFVAL_P(expr), indent);
592 break;
593 case IS_STRING:
594 smart_str_append(buf, Z_STR_P(expr));
595 break;
596 default:
597 {
598 zend_string *str = zval_get_string_func(expr);
599 smart_str_append(buf, str);
600 zend_string_release_ex(str, 0);
601 }
602 break;
603 }
604 }
605 /* }}} */
606
zend_print_zval_r_to_str(zval * expr,int indent)607 ZEND_API zend_string *zend_print_zval_r_to_str(zval *expr, int indent) /* {{{ */
608 {
609 smart_str buf = {0};
610 zend_print_zval_r_to_buf(&buf, expr, indent);
611 smart_str_0(&buf);
612 return buf.s;
613 }
614 /* }}} */
615
zend_print_zval_r(zval * expr,int indent)616 ZEND_API void zend_print_zval_r(zval *expr, int indent) /* {{{ */
617 {
618 zend_string *str = zend_print_zval_r_to_str(expr, indent);
619 zend_write(ZSTR_VAL(str), ZSTR_LEN(str));
620 zend_string_release_ex(str, 0);
621 }
622 /* }}} */
623
zend_fopen_wrapper(zend_string * filename,zend_string ** opened_path)624 static FILE *zend_fopen_wrapper(zend_string *filename, zend_string **opened_path) /* {{{ */
625 {
626 if (opened_path) {
627 *opened_path = zend_string_copy(filename);
628 }
629 return fopen(ZSTR_VAL(filename), "rb");
630 }
631 /* }}} */
632
633 #ifdef ZTS
634 static bool short_tags_default = 1;
635 static uint32_t compiler_options_default = ZEND_COMPILE_DEFAULT;
636 #else
637 # define short_tags_default 1
638 # define compiler_options_default ZEND_COMPILE_DEFAULT
639 #endif
640
zend_set_default_compile_time_values(void)641 static void zend_set_default_compile_time_values(void) /* {{{ */
642 {
643 /* default compile-time values */
644 CG(short_tags) = short_tags_default;
645 CG(compiler_options) = compiler_options_default;
646
647 CG(rtd_key_counter) = 0;
648 }
649 /* }}} */
650
651 #ifdef ZEND_WIN32
zend_get_windows_version_info(OSVERSIONINFOEX * osvi)652 static void zend_get_windows_version_info(OSVERSIONINFOEX *osvi) /* {{{ */
653 {
654 ZeroMemory(osvi, sizeof(OSVERSIONINFOEX));
655 osvi->dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
656 if(!GetVersionEx((OSVERSIONINFO *) osvi)) {
657 ZEND_UNREACHABLE(); /* Should not happen as sizeof is used. */
658 }
659 }
660 /* }}} */
661 #endif
662
zend_init_exception_op(void)663 static void zend_init_exception_op(void) /* {{{ */
664 {
665 memset(EG(exception_op), 0, sizeof(EG(exception_op)));
666 EG(exception_op)[0].opcode = ZEND_HANDLE_EXCEPTION;
667 ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op));
668 EG(exception_op)[1].opcode = ZEND_HANDLE_EXCEPTION;
669 ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op)+1);
670 EG(exception_op)[2].opcode = ZEND_HANDLE_EXCEPTION;
671 ZEND_VM_SET_OPCODE_HANDLER(EG(exception_op)+2);
672 }
673 /* }}} */
674
zend_init_call_trampoline_op(void)675 static void zend_init_call_trampoline_op(void) /* {{{ */
676 {
677 memset(&EG(call_trampoline_op), 0, sizeof(EG(call_trampoline_op)));
678 EG(call_trampoline_op).opcode = ZEND_CALL_TRAMPOLINE;
679 ZEND_VM_SET_OPCODE_HANDLER(&EG(call_trampoline_op));
680 }
681 /* }}} */
682
auto_global_dtor(zval * zv)683 static void auto_global_dtor(zval *zv) /* {{{ */
684 {
685 free(Z_PTR_P(zv));
686 }
687 /* }}} */
688
689 #ifdef ZTS
auto_global_copy_ctor(zval * zv)690 static void auto_global_copy_ctor(zval *zv) /* {{{ */
691 {
692 zend_auto_global *old_ag = (zend_auto_global *) Z_PTR_P(zv);
693 zend_auto_global *new_ag = pemalloc(sizeof(zend_auto_global), 1);
694
695 new_ag->name = old_ag->name;
696 new_ag->auto_global_callback = old_ag->auto_global_callback;
697 new_ag->jit = old_ag->jit;
698
699 Z_PTR_P(zv) = new_ag;
700 }
701 /* }}} */
702
compiler_globals_ctor(zend_compiler_globals * compiler_globals)703 static void compiler_globals_ctor(zend_compiler_globals *compiler_globals) /* {{{ */
704 {
705 compiler_globals->compiled_filename = NULL;
706 compiler_globals->zend_lineno = 0;
707
708 compiler_globals->function_table = (HashTable *) malloc(sizeof(HashTable));
709 zend_hash_init(compiler_globals->function_table, 1024, NULL, ZEND_FUNCTION_DTOR, 1);
710 zend_hash_copy(compiler_globals->function_table, global_function_table, NULL);
711 compiler_globals->copied_functions_count = zend_hash_num_elements(compiler_globals->function_table);
712
713 compiler_globals->class_table = (HashTable *) malloc(sizeof(HashTable));
714 zend_hash_init(compiler_globals->class_table, 64, NULL, ZEND_CLASS_DTOR, 1);
715 zend_hash_copy(compiler_globals->class_table, global_class_table, zend_class_add_ref);
716
717 zend_set_default_compile_time_values();
718
719 compiler_globals->auto_globals = (HashTable *) malloc(sizeof(HashTable));
720 zend_hash_init(compiler_globals->auto_globals, 8, NULL, auto_global_dtor, 1);
721 zend_hash_copy(compiler_globals->auto_globals, global_auto_globals_table, auto_global_copy_ctor);
722
723 compiler_globals->script_encoding_list = NULL;
724 compiler_globals->current_linking_class = NULL;
725
726 /* Map region is going to be created and resized at run-time. */
727 compiler_globals->map_ptr_real_base = NULL;
728 compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
729 compiler_globals->map_ptr_size = 0;
730 compiler_globals->map_ptr_last = global_map_ptr_last;
731 if (compiler_globals->map_ptr_last) {
732 /* Allocate map_ptr table */
733 compiler_globals->map_ptr_size = ZEND_MM_ALIGNED_SIZE_EX(compiler_globals->map_ptr_last, 4096);
734 void *base = pemalloc(compiler_globals->map_ptr_size * sizeof(void*), 1);
735 compiler_globals->map_ptr_real_base = base;
736 compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(base);
737 memset(base, 0, compiler_globals->map_ptr_last * sizeof(void*));
738 }
739 }
740 /* }}} */
741
compiler_globals_dtor(zend_compiler_globals * compiler_globals)742 static void compiler_globals_dtor(zend_compiler_globals *compiler_globals) /* {{{ */
743 {
744 if (compiler_globals->function_table != GLOBAL_FUNCTION_TABLE) {
745 uint32_t n = compiler_globals->copied_functions_count;
746
747 /* Prevent destruction of functions copied from the main process context */
748 if (zend_hash_num_elements(compiler_globals->function_table) <= n) {
749 compiler_globals->function_table->nNumUsed = 0;
750 } else {
751 Bucket *p = compiler_globals->function_table->arData;
752
753 compiler_globals->function_table->nNumOfElements -= n;
754 while (n != 0) {
755 ZVAL_UNDEF(&p->val);
756 p++;
757 n--;
758 }
759 }
760 zend_hash_destroy(compiler_globals->function_table);
761 free(compiler_globals->function_table);
762 }
763 if (compiler_globals->class_table != GLOBAL_CLASS_TABLE) {
764 /* Child classes may reuse structures from parent classes, so destroy in reverse order. */
765 zend_hash_graceful_reverse_destroy(compiler_globals->class_table);
766 free(compiler_globals->class_table);
767 }
768 if (compiler_globals->auto_globals != GLOBAL_AUTO_GLOBALS_TABLE) {
769 zend_hash_destroy(compiler_globals->auto_globals);
770 free(compiler_globals->auto_globals);
771 }
772 if (compiler_globals->script_encoding_list) {
773 pefree((char*)compiler_globals->script_encoding_list, 1);
774 }
775 if (compiler_globals->map_ptr_real_base) {
776 free(compiler_globals->map_ptr_real_base);
777 compiler_globals->map_ptr_real_base = NULL;
778 compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
779 compiler_globals->map_ptr_size = 0;
780 }
781 }
782 /* }}} */
783
executor_globals_ctor(zend_executor_globals * executor_globals)784 static void executor_globals_ctor(zend_executor_globals *executor_globals) /* {{{ */
785 {
786 zend_startup_constants();
787 zend_copy_constants(executor_globals->zend_constants, GLOBAL_CONSTANTS_TABLE);
788 zend_init_rsrc_plist();
789 zend_init_exception_op();
790 zend_init_call_trampoline_op();
791 memset(&executor_globals->trampoline, 0, sizeof(zend_op_array));
792 executor_globals->capture_warnings_during_sccp = 0;
793 executor_globals->user_error_handler_error_reporting = 0;
794 ZVAL_UNDEF(&executor_globals->user_error_handler);
795 ZVAL_UNDEF(&executor_globals->user_exception_handler);
796 executor_globals->in_autoload = NULL;
797 executor_globals->current_execute_data = NULL;
798 executor_globals->current_module = NULL;
799 executor_globals->exit_status = 0;
800 #if XPFPA_HAVE_CW
801 executor_globals->saved_fpu_cw = 0;
802 #endif
803 executor_globals->saved_fpu_cw_ptr = NULL;
804 executor_globals->active = 0;
805 executor_globals->bailout = NULL;
806 executor_globals->error_handling = EH_NORMAL;
807 executor_globals->exception_class = NULL;
808 executor_globals->exception = NULL;
809 executor_globals->objects_store.object_buckets = NULL;
810 executor_globals->current_fiber_context = NULL;
811 executor_globals->main_fiber_context = NULL;
812 executor_globals->active_fiber = NULL;
813 #ifdef ZEND_WIN32
814 zend_get_windows_version_info(&executor_globals->windows_version_info);
815 #endif
816 executor_globals->flags = EG_FLAGS_INITIAL;
817 executor_globals->record_errors = false;
818 executor_globals->num_errors = 0;
819 executor_globals->errors = NULL;
820 #ifdef ZEND_CHECK_STACK_LIMIT
821 executor_globals->stack_limit = (void*)0;
822 executor_globals->stack_base = (void*)0;
823 #endif
824 #ifdef ZEND_MAX_EXECUTION_TIMERS
825 executor_globals->pid = 0;
826 executor_globals->oldact = (struct sigaction){0};
827 #endif
828 }
829 /* }}} */
830
executor_globals_dtor(zend_executor_globals * executor_globals)831 static void executor_globals_dtor(zend_executor_globals *executor_globals) /* {{{ */
832 {
833 zend_ini_dtor(executor_globals->ini_directives);
834
835 if (&executor_globals->persistent_list != global_persistent_list) {
836 zend_destroy_rsrc_list(&executor_globals->persistent_list);
837 }
838 if (executor_globals->zend_constants != GLOBAL_CONSTANTS_TABLE) {
839 zend_hash_destroy(executor_globals->zend_constants);
840 free(executor_globals->zend_constants);
841 }
842 }
843 /* }}} */
844
zend_new_thread_end_handler(THREAD_T thread_id)845 static void zend_new_thread_end_handler(THREAD_T thread_id) /* {{{ */
846 {
847 zend_copy_ini_directives();
848 zend_ini_refresh_caches(ZEND_INI_STAGE_STARTUP);
849 #ifdef ZEND_CHECK_STACK_LIMIT
850 zend_call_stack_init();
851 #endif
852 zend_max_execution_timer_init();
853 }
854 /* }}} */
855 #endif
856
857 #if defined(__FreeBSD__) || defined(__DragonFly__)
858 /* FreeBSD and DragonFly floating point precision fix */
859 #include <floatingpoint.h>
860 #endif
861
ini_scanner_globals_ctor(zend_ini_scanner_globals * scanner_globals_p)862 static void ini_scanner_globals_ctor(zend_ini_scanner_globals *scanner_globals_p) /* {{{ */
863 {
864 memset(scanner_globals_p, 0, sizeof(*scanner_globals_p));
865 }
866 /* }}} */
867
php_scanner_globals_ctor(zend_php_scanner_globals * scanner_globals_p)868 static void php_scanner_globals_ctor(zend_php_scanner_globals *scanner_globals_p) /* {{{ */
869 {
870 memset(scanner_globals_p, 0, sizeof(*scanner_globals_p));
871 }
872 /* }}} */
873
module_destructor_zval(zval * zv)874 static void module_destructor_zval(zval *zv) /* {{{ */
875 {
876 zend_module_entry *module = (zend_module_entry*)Z_PTR_P(zv);
877 module_destructor(module);
878 }
879 /* }}} */
880
php_auto_globals_create_globals(zend_string * name)881 static bool php_auto_globals_create_globals(zend_string *name) /* {{{ */
882 {
883 /* While we keep registering $GLOBALS as an auto-global, we do not create an
884 * actual variable for it. Access to it handled specially by the compiler. */
885 return 0;
886 }
887 /* }}} */
888
zend_startup(zend_utility_functions * utility_functions)889 void zend_startup(zend_utility_functions *utility_functions) /* {{{ */
890 {
891 #ifdef ZTS
892 zend_compiler_globals *compiler_globals;
893 zend_executor_globals *executor_globals;
894 extern ZEND_API ts_rsrc_id ini_scanner_globals_id;
895 extern ZEND_API ts_rsrc_id language_scanner_globals_id;
896 #else
897 extern zend_ini_scanner_globals ini_scanner_globals;
898 extern zend_php_scanner_globals language_scanner_globals;
899 #endif
900
901 zend_cpu_startup();
902
903 #ifdef ZEND_WIN32
904 php_win32_cp_set_by_id(65001);
905 #endif
906
907 start_memory_manager();
908
909 virtual_cwd_startup(); /* Could use shutdown to free the main cwd but it would just slow it down for CGI */
910
911 #if defined(__FreeBSD__) || defined(__DragonFly__)
912 /* FreeBSD and DragonFly floating point precision fix */
913 fpsetmask(0);
914 #endif
915
916 zend_startup_hrtime();
917 zend_startup_strtod();
918 zend_startup_extensions_mechanism();
919
920 /* Set up utility functions and values */
921 zend_error_cb = utility_functions->error_function;
922 zend_printf = utility_functions->printf_function;
923 zend_write = utility_functions->write_function;
924 zend_fopen = utility_functions->fopen_function;
925 if (!zend_fopen) {
926 zend_fopen = zend_fopen_wrapper;
927 }
928 zend_stream_open_function = utility_functions->stream_open_function;
929 zend_message_dispatcher_p = utility_functions->message_handler;
930 zend_get_configuration_directive_p = utility_functions->get_configuration_directive;
931 zend_ticks_function = utility_functions->ticks_function;
932 zend_on_timeout = utility_functions->on_timeout;
933 zend_printf_to_smart_string = utility_functions->printf_to_smart_string_function;
934 zend_printf_to_smart_str = utility_functions->printf_to_smart_str_function;
935 zend_getenv = utility_functions->getenv_function;
936 zend_resolve_path = utility_functions->resolve_path_function;
937
938 zend_interrupt_function = NULL;
939
940 #ifdef HAVE_DTRACE
941 /* build with dtrace support */
942 {
943 char *tmp = getenv("USE_ZEND_DTRACE");
944
945 if (tmp && ZEND_ATOL(tmp)) {
946 zend_dtrace_enabled = 1;
947 zend_compile_file = dtrace_compile_file;
948 zend_execute_ex = dtrace_execute_ex;
949 zend_execute_internal = dtrace_execute_internal;
950
951 zend_observer_error_register(dtrace_error_notify_cb);
952 } else {
953 zend_compile_file = compile_file;
954 zend_execute_ex = execute_ex;
955 zend_execute_internal = NULL;
956 }
957 }
958 #else
959 zend_compile_file = compile_file;
960 zend_execute_ex = execute_ex;
961 zend_execute_internal = NULL;
962 #endif /* HAVE_DTRACE */
963 zend_compile_string = compile_string;
964 zend_throw_exception_hook = NULL;
965
966 /* Set up the default garbage collection implementation. */
967 gc_collect_cycles = zend_gc_collect_cycles;
968
969 zend_vm_init();
970
971 /* set up version */
972 zend_version_info = strdup(ZEND_CORE_VERSION_INFO);
973 zend_version_info_length = sizeof(ZEND_CORE_VERSION_INFO) - 1;
974
975 GLOBAL_FUNCTION_TABLE = (HashTable *) malloc(sizeof(HashTable));
976 GLOBAL_CLASS_TABLE = (HashTable *) malloc(sizeof(HashTable));
977 GLOBAL_AUTO_GLOBALS_TABLE = (HashTable *) malloc(sizeof(HashTable));
978 GLOBAL_CONSTANTS_TABLE = (HashTable *) malloc(sizeof(HashTable));
979
980 zend_hash_init(GLOBAL_FUNCTION_TABLE, 1024, NULL, ZEND_FUNCTION_DTOR, 1);
981 zend_hash_init(GLOBAL_CLASS_TABLE, 64, NULL, ZEND_CLASS_DTOR, 1);
982 zend_hash_init(GLOBAL_AUTO_GLOBALS_TABLE, 8, NULL, auto_global_dtor, 1);
983 zend_hash_init(GLOBAL_CONSTANTS_TABLE, 128, NULL, ZEND_CONSTANT_DTOR, 1);
984
985 zend_hash_init(&module_registry, 32, NULL, module_destructor_zval, 1);
986 zend_init_rsrc_list_dtors();
987
988 #ifdef ZTS
989 ts_allocate_fast_id(&compiler_globals_id, &compiler_globals_offset, sizeof(zend_compiler_globals), (ts_allocate_ctor) compiler_globals_ctor, (ts_allocate_dtor) compiler_globals_dtor);
990 ts_allocate_fast_id(&executor_globals_id, &executor_globals_offset, sizeof(zend_executor_globals), (ts_allocate_ctor) executor_globals_ctor, (ts_allocate_dtor) executor_globals_dtor);
991 ts_allocate_fast_id(&language_scanner_globals_id, &language_scanner_globals_offset, sizeof(zend_php_scanner_globals), (ts_allocate_ctor) php_scanner_globals_ctor, NULL);
992 ts_allocate_fast_id(&ini_scanner_globals_id, &ini_scanner_globals_offset, sizeof(zend_ini_scanner_globals), (ts_allocate_ctor) ini_scanner_globals_ctor, NULL);
993 compiler_globals = ts_resource(compiler_globals_id);
994 executor_globals = ts_resource(executor_globals_id);
995
996 compiler_globals_dtor(compiler_globals);
997 compiler_globals->in_compilation = 0;
998 compiler_globals->function_table = (HashTable *) malloc(sizeof(HashTable));
999 compiler_globals->class_table = (HashTable *) malloc(sizeof(HashTable));
1000
1001 *compiler_globals->function_table = *GLOBAL_FUNCTION_TABLE;
1002 *compiler_globals->class_table = *GLOBAL_CLASS_TABLE;
1003 compiler_globals->auto_globals = GLOBAL_AUTO_GLOBALS_TABLE;
1004
1005 zend_hash_destroy(executor_globals->zend_constants);
1006 *executor_globals->zend_constants = *GLOBAL_CONSTANTS_TABLE;
1007 #else
1008 ini_scanner_globals_ctor(&ini_scanner_globals);
1009 php_scanner_globals_ctor(&language_scanner_globals);
1010 zend_set_default_compile_time_values();
1011 #ifdef ZEND_WIN32
1012 zend_get_windows_version_info(&EG(windows_version_info));
1013 #endif
1014 /* Map region is going to be created and resized at run-time. */
1015 CG(map_ptr_real_base) = NULL;
1016 CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(NULL);
1017 CG(map_ptr_size) = 0;
1018 CG(map_ptr_last) = 0;
1019 #endif /* ZTS */
1020 EG(error_reporting) = E_ALL & ~E_NOTICE;
1021
1022 zend_interned_strings_init();
1023 zend_startup_builtin_functions();
1024 zend_register_standard_constants();
1025 zend_register_auto_global(zend_string_init_interned("GLOBALS", sizeof("GLOBALS") - 1, 1), 1, php_auto_globals_create_globals);
1026
1027 #ifndef ZTS
1028 zend_init_rsrc_plist();
1029 zend_init_exception_op();
1030 zend_init_call_trampoline_op();
1031 #endif
1032
1033 zend_ini_startup();
1034
1035 #ifdef ZEND_WIN32
1036 /* Uses INI settings, so needs to be run after it. */
1037 php_win32_cp_setup();
1038 #endif
1039
1040 zend_optimizer_startup();
1041
1042 #ifdef ZTS
1043 tsrm_set_new_thread_end_handler(zend_new_thread_end_handler);
1044 tsrm_set_shutdown_handler(zend_interned_strings_dtor);
1045 #endif
1046 }
1047 /* }}} */
1048
zend_register_standard_ini_entries(void)1049 void zend_register_standard_ini_entries(void) /* {{{ */
1050 {
1051 zend_register_ini_entries_ex(ini_entries, 0, MODULE_PERSISTENT);
1052 }
1053 /* }}} */
1054
1055
1056 /* Unlink the global (r/o) copies of the class, function and constant tables,
1057 * and use a fresh r/w copy for the startup thread
1058 */
zend_post_startup(void)1059 zend_result zend_post_startup(void) /* {{{ */
1060 {
1061 #ifdef ZTS
1062 zend_encoding **script_encoding_list;
1063
1064 zend_compiler_globals *compiler_globals = ts_resource(compiler_globals_id);
1065 zend_executor_globals *executor_globals = ts_resource(executor_globals_id);
1066 #endif
1067
1068 startup_done = true;
1069
1070 if (zend_post_startup_cb) {
1071 zend_result (*cb)(void) = zend_post_startup_cb;
1072
1073 zend_post_startup_cb = NULL;
1074 if (cb() != SUCCESS) {
1075 return FAILURE;
1076 }
1077 }
1078
1079 #ifdef ZTS
1080 *GLOBAL_FUNCTION_TABLE = *compiler_globals->function_table;
1081 *GLOBAL_CLASS_TABLE = *compiler_globals->class_table;
1082 *GLOBAL_CONSTANTS_TABLE = *executor_globals->zend_constants;
1083 global_map_ptr_last = compiler_globals->map_ptr_last;
1084
1085 short_tags_default = CG(short_tags);
1086 compiler_options_default = CG(compiler_options);
1087
1088 zend_destroy_rsrc_list(&EG(persistent_list));
1089 free(compiler_globals->function_table);
1090 compiler_globals->function_table = NULL;
1091 free(compiler_globals->class_table);
1092 compiler_globals->class_table = NULL;
1093 if (compiler_globals->map_ptr_real_base) {
1094 free(compiler_globals->map_ptr_real_base);
1095 }
1096 compiler_globals->map_ptr_real_base = NULL;
1097 compiler_globals->map_ptr_base = ZEND_MAP_PTR_BIASED_BASE(NULL);
1098 if ((script_encoding_list = (zend_encoding **)compiler_globals->script_encoding_list)) {
1099 compiler_globals_ctor(compiler_globals);
1100 compiler_globals->script_encoding_list = (const zend_encoding **)script_encoding_list;
1101 } else {
1102 compiler_globals_ctor(compiler_globals);
1103 }
1104 free(EG(zend_constants));
1105 EG(zend_constants) = NULL;
1106
1107 executor_globals_ctor(executor_globals);
1108 global_persistent_list = &EG(persistent_list);
1109 zend_copy_ini_directives();
1110 #else
1111 global_map_ptr_last = CG(map_ptr_last);
1112 #endif
1113
1114 #ifdef ZEND_CHECK_STACK_LIMIT
1115 zend_call_stack_init();
1116 #endif
1117
1118 return SUCCESS;
1119 }
1120 /* }}} */
1121
zend_shutdown(void)1122 void zend_shutdown(void) /* {{{ */
1123 {
1124 zend_vm_dtor();
1125
1126 zend_destroy_rsrc_list(&EG(persistent_list));
1127 zend_destroy_modules();
1128
1129 virtual_cwd_deactivate();
1130 virtual_cwd_shutdown();
1131
1132 zend_hash_destroy(GLOBAL_FUNCTION_TABLE);
1133 /* Child classes may reuse structures from parent classes, so destroy in reverse order. */
1134 zend_hash_graceful_reverse_destroy(GLOBAL_CLASS_TABLE);
1135
1136 zend_hash_destroy(GLOBAL_AUTO_GLOBALS_TABLE);
1137 free(GLOBAL_AUTO_GLOBALS_TABLE);
1138
1139 zend_shutdown_extensions();
1140 free(zend_version_info);
1141
1142 free(GLOBAL_FUNCTION_TABLE);
1143 free(GLOBAL_CLASS_TABLE);
1144
1145 zend_hash_destroy(GLOBAL_CONSTANTS_TABLE);
1146 free(GLOBAL_CONSTANTS_TABLE);
1147 zend_shutdown_strtod();
1148 zend_attributes_shutdown();
1149
1150 #ifdef ZTS
1151 GLOBAL_FUNCTION_TABLE = NULL;
1152 GLOBAL_CLASS_TABLE = NULL;
1153 GLOBAL_AUTO_GLOBALS_TABLE = NULL;
1154 GLOBAL_CONSTANTS_TABLE = NULL;
1155 ts_free_id(executor_globals_id);
1156 ts_free_id(compiler_globals_id);
1157 #else
1158 if (CG(map_ptr_real_base)) {
1159 free(CG(map_ptr_real_base));
1160 CG(map_ptr_real_base) = NULL;
1161 CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(NULL);
1162 CG(map_ptr_size) = 0;
1163 }
1164 if (CG(script_encoding_list)) {
1165 free(ZEND_VOIDP(CG(script_encoding_list)));
1166 CG(script_encoding_list) = NULL;
1167 CG(script_encoding_list_size) = 0;
1168 }
1169 #endif
1170 zend_destroy_rsrc_list_dtors();
1171
1172 zend_unload_modules();
1173
1174 zend_optimizer_shutdown();
1175 startup_done = false;
1176 }
1177 /* }}} */
1178
zend_set_utility_values(zend_utility_values * utility_values)1179 void zend_set_utility_values(zend_utility_values *utility_values) /* {{{ */
1180 {
1181 zend_uv = *utility_values;
1182 }
1183 /* }}} */
1184
1185 /* this should be compatible with the standard zenderror */
zenderror(const char * error)1186 ZEND_COLD void zenderror(const char *error) /* {{{ */
1187 {
1188 CG(parse_error) = 0;
1189
1190 if (EG(exception)) {
1191 /* An exception was thrown in the lexer, don't throw another in the parser. */
1192 return;
1193 }
1194
1195 zend_throw_exception(zend_ce_parse_error, error, 0);
1196 }
1197 /* }}} */
1198
_zend_bailout(const char * filename,uint32_t lineno)1199 ZEND_API ZEND_COLD ZEND_NORETURN void _zend_bailout(const char *filename, uint32_t lineno) /* {{{ */
1200 {
1201
1202 if (!EG(bailout)) {
1203 zend_output_debug_string(1, "%s(%d) : Bailed out without a bailout address!", filename, lineno);
1204 exit(-1);
1205 }
1206 gc_protect(1);
1207 CG(unclean_shutdown) = 1;
1208 CG(active_class_entry) = NULL;
1209 CG(in_compilation) = 0;
1210 CG(memoize_mode) = 0;
1211 EG(current_execute_data) = NULL;
1212 LONGJMP(*EG(bailout), FAILURE);
1213 }
1214 /* }}} */
1215
zend_get_page_size(void)1216 ZEND_API size_t zend_get_page_size(void)
1217 {
1218 #ifdef _WIN32
1219 SYSTEM_INFO system_info;
1220 GetSystemInfo(&system_info);
1221 return system_info.dwPageSize;
1222 #elif defined(__FreeBSD__)
1223 /* This returns the value obtained from
1224 * the auxv vector, avoiding a syscall. */
1225 return getpagesize();
1226 #else
1227 return (size_t) sysconf(_SC_PAGESIZE);
1228 #endif
1229 }
1230
zend_append_version_info(const zend_extension * extension)1231 ZEND_API void zend_append_version_info(const zend_extension *extension) /* {{{ */
1232 {
1233 char *new_info;
1234 uint32_t new_info_length;
1235
1236 new_info_length = (uint32_t)(sizeof(" with v, , by \n")
1237 + strlen(extension->name)
1238 + strlen(extension->version)
1239 + strlen(extension->copyright)
1240 + strlen(extension->author));
1241
1242 new_info = (char *) malloc(new_info_length + 1);
1243
1244 snprintf(new_info, new_info_length, " with %s v%s, %s, by %s\n", extension->name, extension->version, extension->copyright, extension->author);
1245
1246 zend_version_info = (char *) realloc(zend_version_info, zend_version_info_length+new_info_length + 1);
1247 strncat(zend_version_info, new_info, new_info_length);
1248 zend_version_info_length += new_info_length;
1249 free(new_info);
1250 }
1251 /* }}} */
1252
get_zend_version(void)1253 ZEND_API const char *get_zend_version(void) /* {{{ */
1254 {
1255 return zend_version_info;
1256 }
1257 /* }}} */
1258
zend_activate(void)1259 ZEND_API void zend_activate(void) /* {{{ */
1260 {
1261 #ifdef ZTS
1262 virtual_cwd_activate();
1263 #endif
1264 gc_reset();
1265 init_compiler();
1266 init_executor();
1267 startup_scanner();
1268 if (CG(map_ptr_last)) {
1269 memset(CG(map_ptr_real_base), 0, CG(map_ptr_last) * sizeof(void*));
1270 }
1271 zend_init_internal_run_time_cache();
1272 zend_observer_activate();
1273 }
1274 /* }}} */
1275
zend_call_destructors(void)1276 void zend_call_destructors(void) /* {{{ */
1277 {
1278 zend_try {
1279 shutdown_destructors();
1280 } zend_end_try();
1281 }
1282 /* }}} */
1283
zend_deactivate(void)1284 ZEND_API void zend_deactivate(void) /* {{{ */
1285 {
1286 /* we're no longer executing anything */
1287 EG(current_execute_data) = NULL;
1288
1289 zend_try {
1290 shutdown_scanner();
1291 } zend_end_try();
1292
1293 /* shutdown_executor() takes care of its own bailout handling */
1294 shutdown_executor();
1295
1296 zend_try {
1297 zend_ini_deactivate();
1298 } zend_end_try();
1299
1300 zend_try {
1301 shutdown_compiler();
1302 } zend_end_try();
1303
1304 zend_destroy_rsrc_list(&EG(regular_list));
1305
1306 /* See GH-8646: https://github.com/php/php-src/issues/8646
1307 *
1308 * Interned strings that hold class entries can get a corresponding slot in map_ptr for the CE cache.
1309 * map_ptr works like a bump allocator: there is a counter which increases to allocate the next slot in the map.
1310 *
1311 * For class name strings in non-opcache we have:
1312 * - on startup: permanent + interned
1313 * - on request: interned
1314 * For class name strings in opcache we have:
1315 * - on startup: permanent + interned
1316 * - on request: either not interned at all, which we can ignore because they won't get a CE cache entry
1317 * or they were already permanent + interned
1318 * or we get a new permanent + interned string in the opcache persistence code
1319 *
1320 * Notice that the map_ptr layout always has the permanent strings first, and the request strings after.
1321 * In non-opcache, a request string may get a slot in map_ptr, and that interned request string
1322 * gets destroyed at the end of the request. The corresponding map_ptr slot can thereafter never be used again.
1323 * This causes map_ptr to keep reallocating to larger and larger sizes.
1324 *
1325 * We solve it as follows:
1326 * We can check whether we had any interned request strings, which only happens in non-opcache.
1327 * If we have any, we reset map_ptr to the last permanent string.
1328 * We can't lose any permanent strings because of map_ptr's layout.
1329 */
1330 if (zend_hash_num_elements(&CG(interned_strings)) > 0) {
1331 zend_map_ptr_reset();
1332 }
1333
1334 #if GC_BENCH
1335 gc_bench_print();
1336 #endif
1337 }
1338 /* }}} */
1339
zend_message_dispatcher(zend_long message,const void * data)1340 ZEND_API void zend_message_dispatcher(zend_long message, const void *data) /* {{{ */
1341 {
1342 if (zend_message_dispatcher_p) {
1343 zend_message_dispatcher_p(message, data);
1344 }
1345 }
1346 /* }}} */
1347
zend_get_configuration_directive(zend_string * name)1348 ZEND_API zval *zend_get_configuration_directive(zend_string *name) /* {{{ */
1349 {
1350 if (zend_get_configuration_directive_p) {
1351 return zend_get_configuration_directive_p(name);
1352 } else {
1353 return NULL;
1354 }
1355 }
1356 /* }}} */
1357
1358 #define SAVE_STACK(stack) do { \
1359 if (CG(stack).top) { \
1360 memcpy(&stack, &CG(stack), sizeof(zend_stack)); \
1361 CG(stack).top = CG(stack).max = 0; \
1362 CG(stack).elements = NULL; \
1363 } else { \
1364 stack.top = 0; \
1365 } \
1366 } while (0)
1367
1368 #define RESTORE_STACK(stack) do { \
1369 if (stack.top) { \
1370 zend_stack_destroy(&CG(stack)); \
1371 memcpy(&CG(stack), &stack, sizeof(zend_stack)); \
1372 } \
1373 } while (0)
1374
zend_error_zstr_at(int orig_type,zend_string * error_filename,uint32_t error_lineno,zend_string * message)1375 ZEND_API ZEND_COLD void zend_error_zstr_at(
1376 int orig_type, zend_string *error_filename, uint32_t error_lineno, zend_string *message)
1377 {
1378 zval params[4];
1379 zval retval;
1380 zval orig_user_error_handler;
1381 bool in_compilation;
1382 zend_class_entry *saved_class_entry;
1383 zend_stack loop_var_stack;
1384 zend_stack delayed_oplines_stack;
1385 int type = orig_type & E_ALL;
1386 bool orig_record_errors;
1387 uint32_t orig_num_errors;
1388 zend_error_info **orig_errors;
1389 zend_result res;
1390
1391 /* If we're executing a function during SCCP, count any warnings that may be emitted,
1392 * but don't perform any other error handling. */
1393 if (EG(capture_warnings_during_sccp)) {
1394 ZEND_ASSERT(!(type & E_FATAL_ERRORS) && "Fatal error during SCCP");
1395 EG(capture_warnings_during_sccp)++;
1396 return;
1397 }
1398
1399 if (EG(record_errors)) {
1400 zend_error_info *info = emalloc(sizeof(zend_error_info));
1401 info->type = type;
1402 info->lineno = error_lineno;
1403 info->filename = zend_string_copy(error_filename);
1404 info->message = zend_string_copy(message);
1405
1406 /* This is very inefficient for a large number of errors.
1407 * Use pow2 realloc if it becomes a problem. */
1408 EG(num_errors)++;
1409 EG(errors) = erealloc(EG(errors), sizeof(zend_error_info*) * EG(num_errors));
1410 EG(errors)[EG(num_errors)-1] = info;
1411 }
1412
1413 /* Report about uncaught exception in case of fatal errors */
1414 if (EG(exception)) {
1415 zend_execute_data *ex;
1416 const zend_op *opline;
1417
1418 if (type & E_FATAL_ERRORS) {
1419 ex = EG(current_execute_data);
1420 opline = NULL;
1421 while (ex && (!ex->func || !ZEND_USER_CODE(ex->func->type))) {
1422 ex = ex->prev_execute_data;
1423 }
1424 if (ex && ex->opline->opcode == ZEND_HANDLE_EXCEPTION &&
1425 EG(opline_before_exception)) {
1426 opline = EG(opline_before_exception);
1427 }
1428 zend_exception_error(EG(exception), E_WARNING);
1429 EG(exception) = NULL;
1430 if (opline) {
1431 ex->opline = opline;
1432 }
1433 }
1434 }
1435
1436 zend_observer_error_notify(type, error_filename, error_lineno, message);
1437
1438 /* if we don't have a user defined error handler */
1439 if (Z_TYPE(EG(user_error_handler)) == IS_UNDEF
1440 || !(EG(user_error_handler_error_reporting) & type)
1441 || EG(error_handling) != EH_NORMAL) {
1442 zend_error_cb(orig_type, error_filename, error_lineno, message);
1443 } else switch (type) {
1444 case E_ERROR:
1445 case E_PARSE:
1446 case E_CORE_ERROR:
1447 case E_CORE_WARNING:
1448 case E_COMPILE_ERROR:
1449 case E_COMPILE_WARNING:
1450 /* The error may not be safe to handle in user-space */
1451 zend_error_cb(orig_type, error_filename, error_lineno, message);
1452 break;
1453 default:
1454 /* Handle the error in user space */
1455 ZVAL_STR_COPY(¶ms[1], message);
1456 ZVAL_LONG(¶ms[0], type);
1457
1458 if (error_filename) {
1459 ZVAL_STR_COPY(¶ms[2], error_filename);
1460 } else {
1461 ZVAL_NULL(¶ms[2]);
1462 }
1463
1464 ZVAL_LONG(¶ms[3], error_lineno);
1465
1466 ZVAL_COPY_VALUE(&orig_user_error_handler, &EG(user_error_handler));
1467 ZVAL_UNDEF(&EG(user_error_handler));
1468
1469 /* User error handler may include() additional PHP files.
1470 * If an error was generated during compilation PHP will compile
1471 * such scripts recursively, but some CG() variables may be
1472 * inconsistent. */
1473
1474 in_compilation = CG(in_compilation);
1475 if (in_compilation) {
1476 saved_class_entry = CG(active_class_entry);
1477 CG(active_class_entry) = NULL;
1478 SAVE_STACK(loop_var_stack);
1479 SAVE_STACK(delayed_oplines_stack);
1480 CG(in_compilation) = 0;
1481 }
1482
1483 orig_record_errors = EG(record_errors);
1484 orig_num_errors = EG(num_errors);
1485 orig_errors = EG(errors);
1486 EG(record_errors) = false;
1487 EG(num_errors) = 0;
1488 EG(errors) = NULL;
1489
1490 res = call_user_function(CG(function_table), NULL, &orig_user_error_handler, &retval, 4, params);
1491
1492 EG(record_errors) = orig_record_errors;
1493 EG(num_errors) = orig_num_errors;
1494 EG(errors) = orig_errors;
1495
1496 if (res == SUCCESS) {
1497 if (Z_TYPE(retval) != IS_UNDEF) {
1498 if (Z_TYPE(retval) == IS_FALSE) {
1499 zend_error_cb(orig_type, error_filename, error_lineno, message);
1500 }
1501 zval_ptr_dtor(&retval);
1502 }
1503 } else if (!EG(exception)) {
1504 /* The user error handler failed, use built-in error handler */
1505 zend_error_cb(orig_type, error_filename, error_lineno, message);
1506 }
1507
1508 if (in_compilation) {
1509 CG(active_class_entry) = saved_class_entry;
1510 RESTORE_STACK(loop_var_stack);
1511 RESTORE_STACK(delayed_oplines_stack);
1512 CG(in_compilation) = 1;
1513 }
1514
1515 zval_ptr_dtor(¶ms[2]);
1516 zval_ptr_dtor(¶ms[1]);
1517
1518 if (Z_TYPE(EG(user_error_handler)) == IS_UNDEF) {
1519 ZVAL_COPY_VALUE(&EG(user_error_handler), &orig_user_error_handler);
1520 } else {
1521 zval_ptr_dtor(&orig_user_error_handler);
1522 }
1523 break;
1524 }
1525
1526 if (type == E_PARSE) {
1527 /* eval() errors do not affect exit_status */
1528 if (!(EG(current_execute_data) &&
1529 EG(current_execute_data)->func &&
1530 ZEND_USER_CODE(EG(current_execute_data)->func->type) &&
1531 EG(current_execute_data)->opline->opcode == ZEND_INCLUDE_OR_EVAL &&
1532 EG(current_execute_data)->opline->extended_value == ZEND_EVAL)) {
1533 EG(exit_status) = 255;
1534 }
1535 }
1536 }
1537 /* }}} */
1538
zend_error_va_list(int orig_type,zend_string * error_filename,uint32_t error_lineno,const char * format,va_list args)1539 static ZEND_COLD void zend_error_va_list(
1540 int orig_type, zend_string *error_filename, uint32_t error_lineno,
1541 const char *format, va_list args)
1542 {
1543 zend_string *message = zend_vstrpprintf(0, format, args);
1544 zend_error_zstr_at(orig_type, error_filename, error_lineno, message);
1545 zend_string_release(message);
1546 }
1547
get_filename_lineno(int type,zend_string ** filename,uint32_t * lineno)1548 static ZEND_COLD void get_filename_lineno(int type, zend_string **filename, uint32_t *lineno) {
1549 /* Obtain relevant filename and lineno */
1550 switch (type) {
1551 case E_CORE_ERROR:
1552 case E_CORE_WARNING:
1553 *filename = NULL;
1554 *lineno = 0;
1555 break;
1556 case E_PARSE:
1557 case E_COMPILE_ERROR:
1558 case E_COMPILE_WARNING:
1559 case E_ERROR:
1560 case E_NOTICE:
1561 case E_STRICT:
1562 case E_DEPRECATED:
1563 case E_WARNING:
1564 case E_USER_ERROR:
1565 case E_USER_WARNING:
1566 case E_USER_NOTICE:
1567 case E_USER_DEPRECATED:
1568 case E_RECOVERABLE_ERROR:
1569 if (zend_is_compiling()) {
1570 *filename = zend_get_compiled_filename();
1571 *lineno = zend_get_compiled_lineno();
1572 } else if (zend_is_executing()) {
1573 *filename = zend_get_executed_filename_ex();
1574 *lineno = zend_get_executed_lineno();
1575 } else {
1576 *filename = NULL;
1577 *lineno = 0;
1578 }
1579 break;
1580 default:
1581 *filename = NULL;
1582 *lineno = 0;
1583 break;
1584 }
1585 if (!*filename) {
1586 *filename = ZSTR_KNOWN(ZEND_STR_UNKNOWN_CAPITALIZED);
1587 }
1588 }
1589
zend_error_at(int type,zend_string * filename,uint32_t lineno,const char * format,...)1590 ZEND_API ZEND_COLD void zend_error_at(
1591 int type, zend_string *filename, uint32_t lineno, const char *format, ...) {
1592 va_list args;
1593
1594 if (!filename) {
1595 uint32_t dummy_lineno;
1596 get_filename_lineno(type, &filename, &dummy_lineno);
1597 }
1598
1599 va_start(args, format);
1600 zend_error_va_list(type, filename, lineno, format, args);
1601 va_end(args);
1602 }
1603
zend_error(int type,const char * format,...)1604 ZEND_API ZEND_COLD void zend_error(int type, const char *format, ...) {
1605 zend_string *filename;
1606 uint32_t lineno;
1607 va_list args;
1608
1609 get_filename_lineno(type, &filename, &lineno);
1610 va_start(args, format);
1611 zend_error_va_list(type, filename, lineno, format, args);
1612 va_end(args);
1613 }
1614
zend_error_unchecked(int type,const char * format,...)1615 ZEND_API ZEND_COLD void zend_error_unchecked(int type, const char *format, ...) {
1616 zend_string *filename;
1617 uint32_t lineno;
1618 va_list args;
1619
1620 get_filename_lineno(type, &filename, &lineno);
1621 va_start(args, format);
1622 zend_error_va_list(type, filename, lineno, format, args);
1623 va_end(args);
1624 }
1625
zend_error_at_noreturn(int type,zend_string * filename,uint32_t lineno,const char * format,...)1626 ZEND_API ZEND_COLD ZEND_NORETURN void zend_error_at_noreturn(
1627 int type, zend_string *filename, uint32_t lineno, const char *format, ...)
1628 {
1629 va_list args;
1630
1631 if (!filename) {
1632 uint32_t dummy_lineno;
1633 get_filename_lineno(type, &filename, &dummy_lineno);
1634 }
1635
1636 va_start(args, format);
1637 zend_error_va_list(type, filename, lineno, format, args);
1638 va_end(args);
1639 /* Should never reach this. */
1640 abort();
1641 }
1642
zend_error_noreturn(int type,const char * format,...)1643 ZEND_API ZEND_COLD ZEND_NORETURN void zend_error_noreturn(int type, const char *format, ...)
1644 {
1645 zend_string *filename;
1646 uint32_t lineno;
1647 va_list args;
1648
1649 get_filename_lineno(type, &filename, &lineno);
1650 va_start(args, format);
1651 zend_error_va_list(type, filename, lineno, format, args);
1652 va_end(args);
1653 /* Should never reach this. */
1654 abort();
1655 }
1656
zend_strerror_noreturn(int type,int errn,const char * message)1657 ZEND_API ZEND_COLD ZEND_NORETURN void zend_strerror_noreturn(int type, int errn, const char *message)
1658 {
1659 #ifdef HAVE_STRERROR_R
1660 char b[1024];
1661
1662 # ifdef STRERROR_R_CHAR_P
1663 char *buf = strerror_r(errn, b, sizeof(b));
1664 # else
1665 strerror_r(errn, b, sizeof(b));
1666 char *buf = b;
1667 # endif
1668 #else
1669 char *buf = strerror(errn);
1670 #endif
1671
1672 zend_error_noreturn(type, "%s: %s (%d)", message, buf, errn);
1673 }
1674
zend_error_zstr(int type,zend_string * message)1675 ZEND_API ZEND_COLD void zend_error_zstr(int type, zend_string *message) {
1676 zend_string *filename;
1677 uint32_t lineno;
1678 get_filename_lineno(type, &filename, &lineno);
1679 zend_error_zstr_at(type, filename, lineno, message);
1680 }
1681
zend_begin_record_errors(void)1682 ZEND_API void zend_begin_record_errors(void)
1683 {
1684 ZEND_ASSERT(!EG(record_errors) && "Error recording already enabled");
1685 EG(record_errors) = true;
1686 EG(num_errors) = 0;
1687 EG(errors) = NULL;
1688 }
1689
zend_emit_recorded_errors(void)1690 ZEND_API void zend_emit_recorded_errors(void)
1691 {
1692 EG(record_errors) = false;
1693 for (uint32_t i = 0; i < EG(num_errors); i++) {
1694 zend_error_info *error = EG(errors)[i];
1695 zend_error_zstr_at(error->type, error->filename, error->lineno, error->message);
1696 }
1697 }
1698
zend_free_recorded_errors(void)1699 ZEND_API void zend_free_recorded_errors(void)
1700 {
1701 if (!EG(num_errors)) {
1702 return;
1703 }
1704
1705 for (uint32_t i = 0; i < EG(num_errors); i++) {
1706 zend_error_info *info = EG(errors)[i];
1707 zend_string_release(info->filename);
1708 zend_string_release(info->message);
1709 efree(info);
1710 }
1711 efree(EG(errors));
1712 EG(errors) = NULL;
1713 EG(num_errors) = 0;
1714 }
1715
zend_throw_error(zend_class_entry * exception_ce,const char * format,...)1716 ZEND_API ZEND_COLD void zend_throw_error(zend_class_entry *exception_ce, const char *format, ...) /* {{{ */
1717 {
1718 va_list va;
1719 char *message = NULL;
1720
1721 if (!exception_ce) {
1722 exception_ce = zend_ce_error;
1723 }
1724
1725 /* Marker used to disable exception generation during preloading. */
1726 if (EG(exception) == (void*)(uintptr_t)-1) {
1727 return;
1728 }
1729
1730 va_start(va, format);
1731 zend_vspprintf(&message, 0, format, va);
1732
1733 //TODO: we can't convert compile-time errors to exceptions yet???
1734 if (EG(current_execute_data) && !CG(in_compilation)) {
1735 zend_throw_exception(exception_ce, message, 0);
1736 } else {
1737 zend_error(E_ERROR, "%s", message);
1738 }
1739
1740 efree(message);
1741 va_end(va);
1742 }
1743 /* }}} */
1744
1745 /* type should be one of the BP_VAR_* constants, only special messages happen for isset/empty and unset */
zend_illegal_container_offset(const zend_string * container,const zval * offset,int type)1746 ZEND_API ZEND_COLD void zend_illegal_container_offset(const zend_string *container, const zval *offset, int type)
1747 {
1748 switch (type) {
1749 case BP_VAR_IS:
1750 zend_type_error("Cannot access offset of type %s in isset or empty",
1751 zend_zval_type_name(offset));
1752 return;
1753 case BP_VAR_UNSET:
1754 /* Consistent error for when trying to unset a string offset */
1755 if (zend_string_equals(container, ZSTR_KNOWN(ZEND_STR_STRING))) {
1756 zend_throw_error(NULL, "Cannot unset string offsets");
1757 } else {
1758 zend_type_error("Cannot unset offset of type %s on %s", zend_zval_type_name(offset), ZSTR_VAL(container));
1759 }
1760 return;
1761 default:
1762 zend_type_error("Cannot access offset of type %s on %s",
1763 zend_zval_type_name(offset), ZSTR_VAL(container));
1764 return;
1765 }
1766 }
1767
zend_type_error(const char * format,...)1768 ZEND_API ZEND_COLD void zend_type_error(const char *format, ...) /* {{{ */
1769 {
1770 va_list va;
1771 char *message = NULL;
1772
1773 va_start(va, format);
1774 zend_vspprintf(&message, 0, format, va);
1775 zend_throw_exception(zend_ce_type_error, message, 0);
1776 efree(message);
1777 va_end(va);
1778 } /* }}} */
1779
zend_argument_count_error(const char * format,...)1780 ZEND_API ZEND_COLD void zend_argument_count_error(const char *format, ...) /* {{{ */
1781 {
1782 va_list va;
1783 char *message = NULL;
1784
1785 va_start(va, format);
1786 zend_vspprintf(&message, 0, format, va);
1787 zend_throw_exception(zend_ce_argument_count_error, message, 0);
1788 efree(message);
1789
1790 va_end(va);
1791 } /* }}} */
1792
zend_value_error(const char * format,...)1793 ZEND_API ZEND_COLD void zend_value_error(const char *format, ...) /* {{{ */
1794 {
1795 va_list va;
1796 char *message = NULL;
1797
1798 va_start(va, format);
1799 zend_vspprintf(&message, 0, format, va);
1800 zend_throw_exception(zend_ce_value_error, message, 0);
1801 efree(message);
1802 va_end(va);
1803 } /* }}} */
1804
zend_output_debug_string(bool trigger_break,const char * format,...)1805 ZEND_API ZEND_COLD void zend_output_debug_string(bool trigger_break, const char *format, ...) /* {{{ */
1806 {
1807 #if ZEND_DEBUG
1808 va_list args;
1809
1810 va_start(args, format);
1811 # ifdef ZEND_WIN32
1812 {
1813 char output_buf[1024];
1814
1815 vsnprintf(output_buf, 1024, format, args);
1816 OutputDebugString(output_buf);
1817 OutputDebugString("\n");
1818 if (trigger_break && IsDebuggerPresent()) {
1819 DebugBreak();
1820 }
1821 }
1822 # else
1823 vfprintf(stderr, format, args);
1824 fprintf(stderr, "\n");
1825 # endif
1826 va_end(args);
1827 #endif
1828 }
1829 /* }}} */
1830
zend_user_exception_handler(void)1831 ZEND_API ZEND_COLD void zend_user_exception_handler(void) /* {{{ */
1832 {
1833 zval orig_user_exception_handler;
1834 zval params[1], retval2;
1835 zend_object *old_exception;
1836
1837 if (zend_is_unwind_exit(EG(exception))) {
1838 return;
1839 }
1840
1841 old_exception = EG(exception);
1842 EG(exception) = NULL;
1843 ZVAL_OBJ(¶ms[0], old_exception);
1844
1845 ZVAL_COPY_VALUE(&orig_user_exception_handler, &EG(user_exception_handler));
1846 zend_stack_push(&EG(user_exception_handlers), &orig_user_exception_handler);
1847 ZVAL_UNDEF(&EG(user_exception_handler));
1848
1849 if (call_user_function(CG(function_table), NULL, &orig_user_exception_handler, &retval2, 1, params) == SUCCESS) {
1850 zval_ptr_dtor(&retval2);
1851 if (EG(exception)) {
1852 OBJ_RELEASE(EG(exception));
1853 EG(exception) = NULL;
1854 }
1855 OBJ_RELEASE(old_exception);
1856 } else {
1857 EG(exception) = old_exception;
1858 }
1859
1860 if (Z_TYPE(EG(user_exception_handler)) == IS_UNDEF) {
1861 zval *tmp = zend_stack_top(&EG(user_exception_handlers));
1862 if (tmp) {
1863 ZVAL_COPY_VALUE(&EG(user_exception_handler), tmp);
1864 zend_stack_del_top(&EG(user_exception_handlers));
1865 }
1866 }
1867 } /* }}} */
1868
zend_execute_scripts(int type,zval * retval,int file_count,...)1869 ZEND_API zend_result zend_execute_scripts(int type, zval *retval, int file_count, ...) /* {{{ */
1870 {
1871 va_list files;
1872 int i;
1873 zend_file_handle *file_handle;
1874 zend_op_array *op_array;
1875 zend_result ret = SUCCESS;
1876
1877 va_start(files, file_count);
1878 for (i = 0; i < file_count; i++) {
1879 file_handle = va_arg(files, zend_file_handle *);
1880 if (!file_handle) {
1881 continue;
1882 }
1883
1884 if (ret == FAILURE) {
1885 continue;
1886 }
1887
1888 op_array = zend_compile_file(file_handle, type);
1889 if (file_handle->opened_path) {
1890 zend_hash_add_empty_element(&EG(included_files), file_handle->opened_path);
1891 }
1892 if (op_array) {
1893 zend_execute(op_array, retval);
1894 zend_exception_restore();
1895 if (UNEXPECTED(EG(exception))) {
1896 if (Z_TYPE(EG(user_exception_handler)) != IS_UNDEF) {
1897 zend_user_exception_handler();
1898 }
1899 if (EG(exception)) {
1900 ret = zend_exception_error(EG(exception), E_ERROR);
1901 }
1902 }
1903 zend_destroy_static_vars(op_array);
1904 destroy_op_array(op_array);
1905 efree_size(op_array, sizeof(zend_op_array));
1906 } else if (type==ZEND_REQUIRE) {
1907 ret = FAILURE;
1908 }
1909 }
1910 va_end(files);
1911
1912 return ret;
1913 }
1914 /* }}} */
1915
1916 #define COMPILED_STRING_DESCRIPTION_FORMAT "%s(%d) : %s"
1917
zend_make_compiled_string_description(const char * name)1918 ZEND_API char *zend_make_compiled_string_description(const char *name) /* {{{ */
1919 {
1920 const char *cur_filename;
1921 int cur_lineno;
1922 char *compiled_string_description;
1923
1924 if (zend_is_compiling()) {
1925 cur_filename = ZSTR_VAL(zend_get_compiled_filename());
1926 cur_lineno = zend_get_compiled_lineno();
1927 } else if (zend_is_executing()) {
1928 cur_filename = zend_get_executed_filename();
1929 cur_lineno = zend_get_executed_lineno();
1930 } else {
1931 cur_filename = "Unknown";
1932 cur_lineno = 0;
1933 }
1934
1935 zend_spprintf(&compiled_string_description, 0, COMPILED_STRING_DESCRIPTION_FORMAT, cur_filename, cur_lineno, name);
1936 return compiled_string_description;
1937 }
1938 /* }}} */
1939
free_estring(char ** str_p)1940 void free_estring(char **str_p) /* {{{ */
1941 {
1942 efree(*str_p);
1943 }
1944 /* }}} */
1945
zend_map_ptr_reset(void)1946 ZEND_API void zend_map_ptr_reset(void)
1947 {
1948 CG(map_ptr_last) = global_map_ptr_last;
1949 }
1950
zend_map_ptr_new(void)1951 ZEND_API void *zend_map_ptr_new(void)
1952 {
1953 void **ptr;
1954
1955 if (CG(map_ptr_last) >= CG(map_ptr_size)) {
1956 /* Grow map_ptr table */
1957 CG(map_ptr_size) = ZEND_MM_ALIGNED_SIZE_EX(CG(map_ptr_last) + 1, 4096);
1958 CG(map_ptr_real_base) = perealloc(CG(map_ptr_real_base), CG(map_ptr_size) * sizeof(void*), 1);
1959 CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(CG(map_ptr_real_base));
1960 }
1961 ptr = (void**)CG(map_ptr_real_base) + CG(map_ptr_last);
1962 *ptr = NULL;
1963 CG(map_ptr_last)++;
1964 return ZEND_MAP_PTR_PTR2OFFSET(ptr);
1965 }
1966
zend_map_ptr_extend(size_t last)1967 ZEND_API void zend_map_ptr_extend(size_t last)
1968 {
1969 if (last > CG(map_ptr_last)) {
1970 void **ptr;
1971
1972 if (last >= CG(map_ptr_size)) {
1973 /* Grow map_ptr table */
1974 CG(map_ptr_size) = ZEND_MM_ALIGNED_SIZE_EX(last, 4096);
1975 CG(map_ptr_real_base) = perealloc(CG(map_ptr_real_base), CG(map_ptr_size) * sizeof(void*), 1);
1976 CG(map_ptr_base) = ZEND_MAP_PTR_BIASED_BASE(CG(map_ptr_real_base));
1977 }
1978 ptr = (void**)CG(map_ptr_real_base) + CG(map_ptr_last);
1979 memset(ptr, 0, (last - CG(map_ptr_last)) * sizeof(void*));
1980 CG(map_ptr_last) = last;
1981 }
1982 }
1983
zend_alloc_ce_cache(zend_string * type_name)1984 ZEND_API void zend_alloc_ce_cache(zend_string *type_name)
1985 {
1986 if (ZSTR_HAS_CE_CACHE(type_name) || !ZSTR_IS_INTERNED(type_name)) {
1987 return;
1988 }
1989
1990 if ((GC_FLAGS(type_name) & IS_STR_PERMANENT) && startup_done) {
1991 /* Don't allocate slot on permanent interned string outside module startup.
1992 * The cache slot would no longer be valid on the next request. */
1993 return;
1994 }
1995
1996 if (zend_string_equals_literal_ci(type_name, "self")
1997 || zend_string_equals_literal_ci(type_name, "parent")) {
1998 return;
1999 }
2000
2001 /* We use the refcount to keep map_ptr of corresponding type */
2002 uint32_t ret;
2003 do {
2004 ret = ZEND_MAP_PTR_NEW_OFFSET();
2005 } while (ret <= 2);
2006 GC_ADD_FLAGS(type_name, IS_STR_CLASS_NAME_MAP_PTR);
2007 GC_SET_REFCOUNT(type_name, ret);
2008 }
2009
